WO2007000229A1 - Noise-reduced self-locking belt retractor - Google Patents
Noise-reduced self-locking belt retractor Download PDFInfo
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- WO2007000229A1 WO2007000229A1 PCT/EP2006/005526 EP2006005526W WO2007000229A1 WO 2007000229 A1 WO2007000229 A1 WO 2007000229A1 EP 2006005526 W EP2006005526 W EP 2006005526W WO 2007000229 A1 WO2007000229 A1 WO 2007000229A1
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- Prior art keywords
- locking
- locking member
- spring
- belt
- recess
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
Definitions
- the invention relates to a self-locking belt retractor for safety belts, especially in motor vehicles, with a mounted in a housing and a profile head with at least one radially thereto between a rest position and a blocking position pivotally mounted locking member having belt shaft, wherein the locking member by means of a pin connection to one on the belt shaft mounted and coupled with this rotatable mass control wheel and is biased by acting as a g-value spring return spring in its rest position.
- a self-locking belt retractor with the aforementioned features is described in DE 3 1 16 705 A l.
- the locking member is mounted with a recess corresponding to a recess on a keyhole-shaped frontal profile head of the belt shaft and pivotable about a bearing point radially between a rest position and a blocking position.
- the movement of the locking member is of an axially mounted adjacent to the locking member on the belt shaft control disc which is coupled by means of a pin-slot connection with the locking member, wherein the pin can be integrally formed on the control disk and attack on the locking member.
- the invention is therefore based on the object, a self-locking belt retractor with the generic features in such a way that its structure is simplified and nevertheless a sufficient noise attenuation is ensured.
- the invention provides in its basic idea that the profile head has at least one recess for receiving the locking member disposed therein and the locking member is mounted by means of a convex, in a cup-shaped with its bottom aligned to the shaft center axis extension of the recess bearing lug and that the belt shaft with a axially projecting retaining pin engages in a formed in the control disc slot and fixed the control disc such that the control disc determines the blocking member against the force of the return spring in a position over which acts on the locking member guide pin in which the locking member, the lateral boundary surfaces of the recess in the profile head not touched.
- the invention has the advantage that the locking member is inserted only in a recess formed in the profile head recess, wherein the locking member comes to rest with its spherical bearing lug in the correspondingly formed extension of the recess located in the profile head.
- Such an arrangement of a locking member or of two locking members on the profile head of a belt shaft is addressed for example in WO 03/082640.
- the length of the formed in the control disk and the retaining pin of the belt shaft receiving slot is to be interpreted so that the required for the deflection of the locking member relative rotation of the belt shaft is guaranteed to the remaining in belt tension sensitive or vehicle-sensitive control in its rotational movement control disk.
- the two locking members are biased by a common, acting on both locking members restoring spring in each case in its rest position.
- the invention provides that the return spring is designed as a omega spring with bent at its ends from the spring plane spring legs, the spring legs engage the locking members and bias the locking members with a running in the direction of the shaft center axis force component.
- the symmetrical engagement conditions are then designed low, if according to an embodiment of the invention, the points of attack of the spring legs of the return spring are arranged on the locking members such that the opposing points of attack of the spring legs lie with the center of the belt shaft on a straight line.
- Fig. 1 the belt shaft of a belt retractor with locking members
- FIG. 3 the blocking side of the belt shaft according to Figure 1 in the plan view of Figure 2 with attached, but partially cut away control disc.
- the belt shaft 10 shown in Figure 1 has a shaft 1 1 for receiving a Gurtwickels, not shown, which is bounded on both sides by bearing shells 12.
- a profile head 13 is formed, in which two mutually symmetrically opposed recesses 14 are arranged.
- the recesses 14 in each case go in one with his bottom Shaft center aligned shell-shaped extension 16 via, which, as will be described, each of the storage of the arranged in the recess 14 locking member 17 is used.
- the locking members 17 have in a partial region ratchet teeth 18, further a spherical bearing lug 19, which comes to rest on insertion of the locking members in the recesses 14 in the j e electionm bearing extension 16 ( Figure 2).
- the two locking members 17 are detected by a return spring 20 which is formed as a semicircular Omega spring with bent at their ends from the spring plane spring legs 21.
- the spring legs 21 engage with the recesses 14 of the profile head 13 lying locking members 17 and clamp them in their rest position, in which the ratchet teeth 18 of the locking members 17 are within the contour of the profile head 13 ( Figure 2).
- a mass control disk 22 is arranged, projecting from the direction of the profile head 13 guide pins 24 which engage in an associated contour 26 of the locking members 17.
- retaining pins 15 are beneficial.
- the retaining pins 15 may be geometrically designed differently, it is only important that a radial stop given is. Furthermore, it is important for the invention, a central guide and at least one retaining pin 15; a particularly good guidance in all directions has resulted in four retaining pins 15.
- the retaining pins 15 and slots 25 of the control disk 22 are arranged or aligned with respect to the position of the locking members 17 in the recesses 14 so that the retaining pins 15 set the control disk 22 against the force acting on the control disk 22 torque so that the control disk 22 on the On the locking members 17 adjacent guide pins 24, the locking members 17 fixed in such a position in which the locking members 17 have no contact with the lateral boundary surfaces of the recesses 14 and consequently rattling noises are avoided.
- the belt shaft in the illustration of FIGS. 2 or 3 rotates counterclockwise in the case of belt pull-out movements and the control disk 22 remains behind the rotational movement of the belt shaft 10 due to a belt-sensitive or vehicle-sensitive activation
- the belt shaft 10 moves relative to the belt Control disk 22, in the frame on the one hand, the retaining pins 15 in the slots 25 of the control disk 22 in the direction of rotation of the belt shaft 10 to move and on the other hand, the locking members 17 due to the contact contour 26 on the guide pins 24 of the control disk 22 about the position-fixed guide pins 24 around radially outwards the blocking position are pivoted.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention relates to a noise-reduced self-locking belt retractor for safety belts, especially in motor vehicles, which comprises a belt shaft, received in a housing and having a profiled head which has at least one locking member that is mounted thereon so as to be radially swiveled between a rest position and a locking position. Said locking member is coupled by means of a pin connection to an inertia-actuated disk cam mounted on the belt shaft and rotating with the same and is pretensioned in its rest position by a readjusting spring that is configured as a g value spring. The invention is characterized in that the profiled head (13) is provided with at least one recess (14) for receiving the locking member (17) disposed therein and that the locking member (17) is mounted by means of a convex bearing projection (19) that engages with a concave projection (16) of the recess (14) pointing with its bottom towards the shaft center axis. The belt shaft (10) engages, by means of an axially projecting retaining pin (15), in a slot (25) configured in the disk cam (22) and fastens the disk cam (22) in such a manner that the disk cam (22), via the guide pin (24) acting upon the locking member (17), fixes the locking member (17), against the force of the readjusting spring, in a position in which the locking member (17) does not touch the lateral limiting surfaces of the recess (14) in the profiled head (13).
Description
Selbstsperrender Gurtaufroller mit Geräuschdämpfung Self-locking belt retractor with noise damping
B e s c h r e i b u n gDescription
Die Erfindung betrifft einen selbstsperrenden Gurtaufroller für Sicherheitsgurte, insbesondere in Kraftfahrzeugen, mit einer in einem Gehäuse gelagerten und einen Profilkopf mit wenigstens einem daran radial zwischen einer Ruhestellung und einer Blockierstellung verschwenkbar gelagerten Sperrglied aufweisenden Gurtwelle, wobei das Sperrglied mittels einer Stiftverbindung an eine auf der Gurtwelle gelagerte und mit dieser drehbare masseträge Steuerscheibe gekuppelt und von einer als g-Wert-Feder wirkenden Rückstellfeder in seine Ruhestellung vorgespannt ist.The invention relates to a self-locking belt retractor for safety belts, especially in motor vehicles, with a mounted in a housing and a profile head with at least one radially thereto between a rest position and a blocking position pivotally mounted locking member having belt shaft, wherein the locking member by means of a pin connection to one on the belt shaft mounted and coupled with this rotatable mass control wheel and is biased by acting as a g-value spring return spring in its rest position.
Ein selbstsperrender Gurtaufroller mit den vorgenannten Merkmalen ist in der DE 3 1 16 705 A l beschrieben. Hierbei ist das Sperrglied mit einer formentsprechend ausgebildeten Ausnehmung auf einem schlüssellochartig gestalteten stirnseitigen Profilkopf der Gurtwelle gelagert und entsprechend um einen Lagerpunkt radial zwischen einer Ruhestellung und einer Blockierstellung verschwenkbar. Die Bewegung des Sperrgliedes wird von
einer axial neben dem Sperrglied an der Gurtwelle gelagerten Steuerscheibe gesteuert, die mittels einer Stift-Schlitz-Verbindung mit dem Sperrglied gekoppelt ist, wobei der Stift an der Steuerscheibe angeformt sein und entsprechend an dem Sperrglied angreifen kann. Bleibt in Folge einer im einzelnen in der DE 3 1 16 705 A l beschriebenen gurtbandsensitiven oder fahrzeugsensitiven Ansteuerung die masseträge Steuerscheibe hinter der Weiterdrehung der Gurtwelle zurück, so lenkt die Steuerscheibe das Sperrglied aus der Ruhestellung in dessen Blockierstellung mit Eingriff von an dem Sperrglied ausgebildeten Sperrzähnen in eine gehäusefeste Blockierverzahnung aus. Aus Gründen der Geräuschminderung ist eine als g- Wert-Feder ausgebildete, dass heißt die Ansprechschwelle der gurtbandsensitiven Ansteuerung festlegende, Rückstellfeder vorgesehen, die einerseits an einem wellenfesten Widerlager eingehängt ist und mit ihrem anderen Ende die Steuerscheibe durchgreifend an dem Sperrglied eingehängt ist und das Sperrglied jeweils in dessen Ruhestellung vorspannt. In dieser Ruhestellung liegt das Sperrglied gegen einen zusätzlichen, mit einem Gummiring versehenen Dämpfungszapfen der Steuerscheibe an, so dass aufgrund dieser gegenseitigen Verspannung von Steuerscheibe und Sperrglied Geräusche vermieden sind.A self-locking belt retractor with the aforementioned features is described in DE 3 1 16 705 A l. Here, the locking member is mounted with a recess corresponding to a recess on a keyhole-shaped frontal profile head of the belt shaft and pivotable about a bearing point radially between a rest position and a blocking position. The movement of the locking member is of an axially mounted adjacent to the locking member on the belt shaft control disc which is coupled by means of a pin-slot connection with the locking member, wherein the pin can be integrally formed on the control disk and attack on the locking member. Remains as a result of a described in detail in DE 3,116,705 A belt-sensitive or vehicle-sensitive control, the mass control disc behind the further rotation of the belt shaft back, the control disc directs the locking member from the rest position in the blocking position with engagement formed on the locking member ratchet teeth in a housing-fixed blocking teeth. For reasons of noise reduction designed as a g-value spring, that is the response threshold of the belt-sensitive drive defining, return spring is provided, which is mounted on the one hand on a shaft-fixed abutment and with its other end the control disk is hooked to the locking member and the locking member each biased in its rest position. In this rest position, the locking member abuts against an additional, provided with a rubber ring damping pin of the control disk, so that noise is avoided due to this mutual tension of control disk and locking member.
Mit dem bekannten selbstsperrenden Gurtaufroller ist der Nachteil verbunden, dass die Form von Profilkopf und Lagerausnehmung des Sperrgliedes schwierig herzustellen sind; es kommt hinzu, dass auch die für die Geräuschdämpfung vorgesehenen Gestaltungen beziehungsweise Bauteile wie insbesondere der mit einem Gummiring versehene, an der Steuerscheibe angeformte Dämpfungszapfen aufwendig herzustellen sind, wobei auch bei der Montage des Gurtaufrollers auf eine richtige Zuordnung beziehungsweise Ausrichtung der einzelnen Bauteile zueinander zu achten ist.With the known self-locking belt retractor has the disadvantage that the shape of profile head and bearing recess of the locking member are difficult to produce; It should be added that also provided for the noise damping designs or components such as in particular provided with a rubber ring, integrally formed on the control disc damping pins are complicated to manufacture, to pay attention to a correct assignment or alignment of the individual components to each other during assembly of the belt retractor is.
Der Erfindung liegt daher die Aufgabe zugrunde, einen selbstsperrenden Gurtaufroller mit den gattungsgemäßen Merkmalen so auszugestalten, dass
dessen Aufbau vereinfacht und gleichwohl eine ausreichende Geräuschdämpfung gewährleistet ist.The invention is therefore based on the object, a self-locking belt retractor with the generic features in such a way that its structure is simplified and nevertheless a sufficient noise attenuation is ensured.
Die Lösung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen der Erfindung aus dem Inhalt der Patentansprüche, welche dieser Beschreibung nachgestellt sind.The solution to this problem arises, including advantageous refinements and developments of the invention from the content of the claims, which are adjusted to this description.
Die Erfindung sieht in ihrem Grundgedanken vor, dass der Profilkopf wenigstens eine Ausnehmung zur Aufnahme des darin angeordneten Sperrgliedes aufweist und das Sperrglied mittels eines balligen, in einem schalenförmigen mit seinem Boden zur Wellenmittenachse ausgerichteten Fortsatz der Ausnehmung eingreifenden Lageransatzes gelagert ist und dass die Gurtwelle mit einem axial vorstehenden Haltestift in einen in der Steuerscheibe ausgebildeten Schlitz eingreift und die Steuerscheibe derart fixiert, dass die Steuerscheibe über den an dem Sperrglied angreifenden Führungsstift das Sperrglied entgegen der Kraft der Rückstellfeder in einer Lage festlegt, in welcher das Sperrglied die seitlichen Begrenzungsflächen der Ausnehmung im Profilkopf nicht berührt.The invention provides in its basic idea that the profile head has at least one recess for receiving the locking member disposed therein and the locking member is mounted by means of a convex, in a cup-shaped with its bottom aligned to the shaft center axis extension of the recess bearing lug and that the belt shaft with a axially projecting retaining pin engages in a formed in the control disc slot and fixed the control disc such that the control disc determines the blocking member against the force of the return spring in a position over which acts on the locking member guide pin in which the locking member, the lateral boundary surfaces of the recess in the profile head not touched.
Mit der Erfindung ist der Vorteil verbunden, dass das Sperrglied lediglich in eine in dem Profilkopf ausgebildete Ausnehmung einzulegen ist, wobei das Sperrglied mit seinem balligen Lageransatz in dem entsprechend ausgebildeten Fortsatz der in dem Profilkopf befindlichen Ausnehmung zu liegen kommt. Eine derartige Anordnung eines Sperrgliedes beziehungsweise von zwei Sperrgliedern an dem Profilkopf einer Gurtwelle ist beispielsweise in der WO 03/082640 angesprochen. Soweit die auf das wenigstens eine Sperrglied einwirkende Rückstellfeder das Sperrglied in eine Lage bringen kann, in welcher das Sperrglied in seiner Ruhestellung gegen eine seitliche Begrenzungsfläche der Ausnehmung im Profilkopf anliegt und damit Klappergeräusche hervorrufen kann, wirkt eine derartige Vorspannung der Rückstellfeder über den an dem Sperrglied angreifenden Führungsstift der
Steuerscheibe auch auf die Steuerscheibe zurück, so dass über die Positionierung der Steuerscheibe die genaue Stellung des Sperrgliedes in der Ausnehmung des Profilkopfes beeinflussbar ist. Mittels des an der Gurtwelle ausgebildeten und über dessen Eingriff in den Schlitz der Steuerscheibe die Steuerscheibe positionierendem Haltestift ist es somit in vorteilhafter Weise gegeben, die Steuerscheibe in einer solchen Position festzulegen beziehungsweise zu halten, dass die Steuerscheibe ihrerseits das Sperrglied in einer klapperfreien Stellung innerhalb der Ausnehmung hält beziehungsweise festlegt. Die Länge des in der Steuerscheibe ausgebildeten und den Haltestift der Gurtwelle aufnehmenden Schlitzes ist dabei so auszulegen, dass die für die Auslenkung des Sperrgliedes erforderliche Relativdrehung der Gurtwelle zu der bei gurtbandsensitiver beziehungsweise fahrzeugsensitiver Ansteuerung in ihrer Drehbewegung zurückbleibenden Steuerscheibe gewährleistet ist.The invention has the advantage that the locking member is inserted only in a recess formed in the profile head recess, wherein the locking member comes to rest with its spherical bearing lug in the correspondingly formed extension of the recess located in the profile head. Such an arrangement of a locking member or of two locking members on the profile head of a belt shaft is addressed for example in WO 03/082640. As far as acting on the at least one locking member return spring can bring the locking member in a position in which the locking member abuts in its rest position against a lateral boundary surface of the recess in the profile head and thus can cause rattling noises, such a bias of the return spring acts on the on the locking member attacking leadership of the Control disk also on the control disk back so that the exact position of the locking member in the recess of the profile head can be influenced via the positioning of the control disk. By means of trained on the belt shaft and its engagement in the slot of the control disk the control disk positioning holding pin is thus given in an advantageous manner to set the control disk in such a position or hold that the control disk turn the locking member in a rattle-free position within the Recess holds or sets. The length of the formed in the control disk and the retaining pin of the belt shaft receiving slot is to be interpreted so that the required for the deflection of the locking member relative rotation of the belt shaft is guaranteed to the remaining in belt tension sensitive or vehicle-sensitive control in its rotational movement control disk.
Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, dass an dem Profilkopf in symmetrischer Anordnung zueinander einander gegenüberliegende Ausnehmungen mit darin gelagerten Sperrgliedern ausgebildet sind.According to one embodiment of the invention it is provided that on the profile head in a symmetrical arrangement mutually opposed recesses are formed with locking members mounted therein.
Hierbei kann es zweckmäßig sein, wenn die beiden Sperrglieder von einer gemeinsamen, auf beide Sperrglieder einwirkenden Rückstellfeder jeweils in ihrer Ruhestellung vorgespannt sind.It may be expedient if the two locking members are biased by a common, acting on both locking members restoring spring in each case in its rest position.
In einer zweckmäßigen Ausführungsform sieht die Erfindung dabei vor, dass die Rückstellfeder als Omegafeder mit an ihren Enden aus der Federebene abgebogenen Federschenkeln ausgebildet ist, wobei die Federschenkel an den Sperrgliedern angreifen und die Sperrglieder mit einer in Richtung der Wellenmittenachse verlaufenden Kraftkomponente vorspannen.
Die symmetrischen Eingriffsverhältnisse sind dann günstig ausgelegt, wenn nach einem Ausführungsbeispiel der Erfindung die Angriffspunke der Federschenkel der Rückstellfeder an den Sperrgliedern derart angeordnet sind, dass die einander gegenüberliegenden Angriffspunkte der Federschenkel mit dem Mittelpunkt der Gurtwelle auf einer Geraden liegen.In an expedient embodiment, the invention provides that the return spring is designed as a omega spring with bent at its ends from the spring plane spring legs, the spring legs engage the locking members and bias the locking members with a running in the direction of the shaft center axis force component. The symmetrical engagement conditions are then designed low, if according to an embodiment of the invention, the points of attack of the spring legs of the return spring are arranged on the locking members such that the opposing points of attack of the spring legs lie with the center of the belt shaft on a straight line.
Es kann vorgesehen sein, dass an der Stirn der Gurtwelle in symmetrischer Anordnung vier in zugeordnete Schlitze der Steuerscheibe eingreifende Haltestifte angeordnet sind.It can be provided that on the front of the belt shaft in a symmetrical arrangement four engaging in associated slots of the control disk retaining pins are arranged.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung wiedergegeben, welches nachstehend beschrieben ist. Es zeigen:In the drawing, an embodiment of the invention is reproduced, which is described below. Show it:
Fig. 1 die Gurtwelle eines Gurtaufrollers mit Sperrgliedern undFig. 1, the belt shaft of a belt retractor with locking members and
Steuerscheibe in einer schematischen Perspektivansicht,Control disk in a schematic perspective view,
Fig. 2 die Blockierseite der Gurtwelle gemäß Figur 1 in einerFig. 2, the blocking side of the belt shaft according to Figure 1 in one
Draufsicht bei abgenommener Steuerscheibe,Top view with the control disc removed,
Fig. 3 die Blockierseite der Gurtwelle gemäß Figur 1 in der Draufsicht gemäß Figur 2 bei aufgesetzter, jedoch teilweise weg geschnittener Steuerscheibe.Fig. 3, the blocking side of the belt shaft according to Figure 1 in the plan view of Figure 2 with attached, but partially cut away control disc.
Die in Figur 1 dargestellte Gurtwelle 10 hat einen Schaft 1 1 zur Aufnahme eines nicht dargestellten Gurtwickels, der beidseitig durch Lagerschalen 12 begrenzt ist. An dem in Figur 1 rechten Ende der Gurtwelle 10, welches bei Lagerung der Gurtwelle in einem nicht dargestellten U-förmigen Gehäuse eines selbstsperrenden Gurtaufrollers über den seitlichen Gehäuseschenkel hervorsteht, ist ein Profilkopf 13 ausgebildet, in welchem zwei einander symmetrisch gegenüberliegende Ausnehmungen 14 angeordnet sind. Die Ausnehmungen 14 gehen dabei j eweils in einen mit seinem Boden zur
Wellenmittenachse ausgerichteten schalenförmigen Fortsatz 16 über, der, wie noch zu beschreiben sein wird, jeweils der Lagerung des in der Ausnehmung 14 angeordneten Sperrgliedes 17 dient. Ferner ragen über die Stirnseite des Profilkopfes 13 an diesem ausgebildete axial abstehende Haltestifte 15 vor, auf die ebenfalls noch einzugehen sein wird.The belt shaft 10 shown in Figure 1 has a shaft 1 1 for receiving a Gurtwickels, not shown, which is bounded on both sides by bearing shells 12. At the right in Figure 1 end of the belt shaft 10, which protrudes during storage of the belt shaft in a U-shaped housing, not shown, a self-locking belt retractor on the side housing leg, a profile head 13 is formed, in which two mutually symmetrically opposed recesses 14 are arranged. The recesses 14 in each case go in one with his bottom Shaft center aligned shell-shaped extension 16 via, which, as will be described, each of the storage of the arranged in the recess 14 locking member 17 is used. Furthermore protrude beyond the end face of the profile head 13 formed on this axially projecting retaining pins 15, which will also be discussed later.
Die Sperrglieder 17 weisen in einem Teilbereich Sperrzähne 18 auf, ferner einen balligen Lageransatz 19, der beim Einsetzen der Sperrglieder in die Ausnehmungen 14 in deren j eweiligem Lagerfortsatz 16 zu liegen kommt (Figur 2).The locking members 17 have in a partial region ratchet teeth 18, further a spherical bearing lug 19, which comes to rest on insertion of the locking members in the recesses 14 in the j eweiligem bearing extension 16 (Figure 2).
Die beiden Sperrglieder 17 sind von einer Rückstellfeder 20 erfasst, die als halbrunde Omegafeder mit an ihren Enden aus der Federebene abgebogenen Federschenkeln 21 ausgebildet ist. Die Federschenkel 21 greifen an den in den Ausnehmungen 14 des Profilkopfes 13 liegenden Sperrgliedern 17 an und spannen diese in deren Ruhestellung vor, in welcher sich die Sperrzähne 18 der Sperrglieder 17 innerhalb der Kontur des Profilkopfes 13 befinden (Figur 2).The two locking members 17 are detected by a return spring 20 which is formed as a semicircular Omega spring with bent at their ends from the spring plane spring legs 21. The spring legs 21 engage with the recesses 14 of the profile head 13 lying locking members 17 and clamp them in their rest position, in which the ratchet teeth 18 of the locking members 17 are within the contour of the profile head 13 (Figure 2).
Axial neben dem Profilkopf 13 und diesen einschließlich der Sperrglieder 17 überdeckend ist eine masseträge Steuerscheibe 22 angeordnet, von der in Richtung auf den Profilkopf 13 Führungsstifte 24 abstehen, die in eine zugeordnete Kontur 26 der Sperrglieder 17 eingreifen. An der Steuerscheibe 22 sind entsprechend der Zahl der Haltestifte 15 und diesen zugeordnet vier Schlitze 25 ausgebildet, die bei an der Gurtwelle 10 montierter Steuerscheibe 22 die Haltestifte 15 der Gurtwelle 10 in sich aufnehmen.Axially next to the profile head 13 and this including the locking members 17 covering a mass control disk 22 is arranged, projecting from the direction of the profile head 13 guide pins 24 which engage in an associated contour 26 of the locking members 17. On the control disk 22 corresponding to the number of retaining pins 15 and associated therewith four slots 25 are formed which receive the retaining pins 15 of the belt shaft 10 in mounted on the belt shaft 10 control disk 22 in itself.
Daneben ist es wichtig, den auftretenden Kräften während des Straffprozesses oder der Blockierung zu widerstehen, so dass hier mehrere Haltestifte 15 von Vorteil sind. Die Haltestifte 15 können geometrisch auch anders ausgebildet sein, wichtig ist hier lediglich, dass ein radialer Anschlag
gegeben ist. Ferner ist bedeutsam für die Erfindung eine zentrale Führung und wenigstens ein Haltestift 15 ; eine besonders gute Führung in alle Richtungen hat sich bei vier Haltestiften 15 ergeben.In addition, it is important to withstand the forces occurring during the tightening process or blocking, so that here several retaining pins 15 are beneficial. The retaining pins 15 may be geometrically designed differently, it is only important that a radial stop given is. Furthermore, it is important for the invention, a central guide and at least one retaining pin 15; a particularly good guidance in all directions has resulted in four retaining pins 15.
Soweit in Figuren 2 und 3 j eweils die Ruhestellung der Sperrglieder 17 in den Ausnehmungen 14 des Profilkopfes 13 dargestellt sind, werden die beiden Sperrglieder 17 durch die an ihnen angreifende Rückstellfeder 20 mit Federschenkeln 21 in dieser Ruhestellung gehalten und vorgespannt, in welcher die von den Federschenkeln 21 ausgehende Kraftkomponente in Richtung der Wellenmittenachse wirkt. Hierdurch wird ein gewisses Drehmoment auf die Sperrglieder 17 ausgeübt, welches dazu führen würde, dass die Sperrglieder 17 an den zugeordneten seitlichen Begrenzungsflächen der Ausnehmungen 14 anliegen würden. Das auf die Sperrglieder 17 einwirkende Drehmoment wirkt über die Kopplung der Sperrglieder 17 an die Führungsstifte 24 der Steuerscheibe 22 auch auf die Steuerscheibe selbst, die ihrerseits durch die in die Schlitze 25 eingreifenden Haltestifte 15 der Gurtwelle 10 lagefixiert ist. Dabei sind die Haltestifte 15 und Schlitze 25 der Steuerscheibe 22 bezüglich der Position der Sperrglieder 17 in den Ausnehmungen 14 so angeordnet beziehungsweise ausgerichtet, dass die Haltestifte 15 die Steuerscheibe 22 entgegen des auf die Steuerscheibe 22 einwirkenden Drehmoment so festlegen, dass die Steuerscheibe 22 über die an den Sperrgliedern 17 anliegenden Führungsstifte 24 die Sperrglieder 17 in einer solchen Position fixiert, in welcher die Sperrglieder 17 keine Berührung zu den seitlichen Begrenzungsflächen der Ausnehmungen 14 aufweisen und demzufolge Klappergeräusche vermieden sind.Insofar as shown in Figures 2 and 3 in each case the rest position of the locking members 17 in the recesses 14 of the profile head 13, the two locking members 17 are held and biased by acting on them return spring 20 with spring legs 21 in this rest position, in which the Spring legs 21 outgoing force component acts in the direction of the shaft center axis. As a result, a certain torque is exerted on the locking members 17, which would cause the locking members 17 would abut the associated lateral boundary surfaces of the recesses 14. The torque acting on the locking members 17 acts via the coupling of the locking members 17 to the guide pins 24 of the control disk 22 also on the control disk itself, which in turn is fixed in position by the engaging in the slots 25 retaining pins 15 of the belt shaft 10. The retaining pins 15 and slots 25 of the control disk 22 are arranged or aligned with respect to the position of the locking members 17 in the recesses 14 so that the retaining pins 15 set the control disk 22 against the force acting on the control disk 22 torque so that the control disk 22 on the On the locking members 17 adjacent guide pins 24, the locking members 17 fixed in such a position in which the locking members 17 have no contact with the lateral boundary surfaces of the recesses 14 and consequently rattling noises are avoided.
Dreht die Gurtwelle in der Darstellung der Figuren 2 beziehungsweise 3 bei Gurtauszugsbewegungen entgegen dem Uhrzeigersinn und bleibt aufgrund einer gurtbandsensitiven beziehungsweise fahrzeugsensitiven Ansteuerung die Steuerscheibe 22 hinter der Drehbewegung der Gurtwelle 10 zurück, so kommt es zu einer Relativdrehung der Gurtwelle 10 gegenüber der
Steuerscheibe 22, in Rahmen derer einerseits die Haltestifte 15 in den Schlitzen 25 der Steuerscheibe 22 in Drehrichtung der Gurtwelle 10 sich verschieben und andererseits die Sperrglieder 17 aufgrund der Anlagekontur 26 an den Führungsstiften 24 der Steuerscheibe 22 um die lagefixierten Führungsstifte 24 herum radial nach außen in die Blockierposition verschwenkt werden.If the belt shaft in the illustration of FIGS. 2 or 3 rotates counterclockwise in the case of belt pull-out movements and the control disk 22 remains behind the rotational movement of the belt shaft 10 due to a belt-sensitive or vehicle-sensitive activation, the belt shaft 10 moves relative to the belt Control disk 22, in the frame on the one hand, the retaining pins 15 in the slots 25 of the control disk 22 in the direction of rotation of the belt shaft 10 to move and on the other hand, the locking members 17 due to the contact contour 26 on the guide pins 24 of the control disk 22 about the position-fixed guide pins 24 around radially outwards the blocking position are pivoted.
Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.
The features disclosed in the foregoing description, the claims, the abstract and the drawings of the subject matter of these documents may be essential individually or in any combination with each other for the realization of the invention in its various embodiments.
Claims
1. Selbstsperrender Gurtaufroller für Sicherheitsgurte, insbesondere in Kraftfahrzeugen, mit einer in einem Gehäuse gelagerten und einen Profilkopf mit wenigstens einem daran radial zwischen einer Ruhestellung und einer Blockierstellung verschwenkbar gelagerten Sperrglied aufweisenden Gurtwelle, wobei das Sperrglied mittels einer Stiftverbindung an eine auf der Gurtwelle gelagerte und mit dieser drehbare masseträge Steuerscheibe gekuppelt und von einer als g- Wert-Feder wirkenden Rückstellfeder in seine Ruhestellung vorgespannt ist, dadurch gekennzeichnet, dass der Profilkopf (13) wenigstens eine Ausnehmung (14) zur Aufnahme des darin angeordneten Sperrgliedes (17) aufweist und das Sperrglied (17) mittels eines balligen, in einem schalenförmigen mit seinem Boden zur Wellenmittenachse ausgerichteten Fortsatz (16) der Ausnehmung (14) eingreifenden Lageransatzes (19) gelagert ist und dass die Gurtwelle (10) mit einem axial vorstehenden Haltestift (15) in einen in der 1. Self-locking belt retractor for safety belts, especially in motor vehicles, with a mounted in a housing and a profile head with at least one radially thereto between a rest position and a blocking position pivotally mounted locking member having belt shaft, wherein the locking member by means of a pin connection to a mounted on the belt shaft and coupled with this rotatable masses control disk and is biased by acting as a g-value spring return spring in its rest position, characterized in that the profile head (13) has at least one recess (14) for receiving the locking member arranged therein (17) and the Locking member (17) by means of a spherical, in a cup-shaped with its bottom to the shaft center axis aligned projection (16) of the recess (14) engaging bearing bearing (19) is mounted and that the belt shaft (10) with an axially projecting retaining pin (15) in a in the
Steuerscheibe (22) ausgebildeten Schlitz (25) eingreift und die Steuerscheibe (22) derart fixiert, dass die Steuerscheibe (22) über den an dem Sperrglied ( 17) angreifenden Führungsstift (24) das Sperrglied ( 17) entgegen der Kraft der Rückstellfeder (20) in einer Lage festlegt, in welcher das Sperrglied ( 17) die seitlichen Begrenzungsflächen der Ausnehmung ( 14) im Profilkopf ( 13) nicht berührt.Control disc (22) formed slot (25) engages and the control disc (22) fixed such that the control disc (22) via the on the locking member (17) engaging the guide pin (24) the locking member (17) against the force of the return spring (20 ) determines in a position in which the locking member (17) does not touch the lateral boundary surfaces of the recess (14) in the profile head (13).
2. Selbstsperrender Gurtaufroller nach Anspruch 1 , dadurch gekennzeichnet, dass an dem Profilkopf ( 13) in symmetrischer Anordnung zueinander einander gegenüberliegende Ausnehmungen ( 15) mit darin gelagerten Sperrgliedern ( 17) ausgebildet sind.2. Self-locking belt retractor according to claim 1, characterized in that on the profile head (13) in a symmetrical arrangement mutually opposed recesses (15) are formed therein with locking members (17).
3. Selbstsperrender Gurtaufroller nach Anspruch 2, dadurch gekennzeichnet, dass die beiden Sperrglieder ( 17) von einer gemeinsamen, auf beide Sperrglieder ( 17) einwirkenden Rückstellfeder (20) jeweils in ihrer Ruhestellung vorgespannt sind.3. Self-locking belt retractor according to claim 2, characterized in that the two locking members (17) by a common, on both locking members (17) acting on the return spring (20) are biased in each case in its rest position.
4. Selbstsperrender Gurtaufroller nach Anspruch 3 , dadurch gekennzeichnet, dass die Rückstellfeder (20) als Omegafeder mit an ihren Enden aus der Federebene abgebogenen Federschenkeln (21 ) ausgebildet ist, wobei die Federschenkel (21 ) an den Sperrgliedern ( 17) angreifen und die Sperrglieder ( 17) mit einer in Richtung der Wellenmittenachse verlaufenden Kraftkomponente vorspannen.4. Self-locking belt retractor according to claim 3, characterized in that the return spring (20) is formed as Omega spring with bent at their ends from the spring plane spring legs (21), wherein the spring legs (21) engage the locking members (17) and the locking members (17) biasing with a force component extending in the direction of the shaft center axis.
5. Selbstsperrender Gurtaufroller nach Anspruch 4, dadurch gekennzeichnet, dass die Angriffspunkte der Federschenkel (21 ) der Rückstellfeder (20) an den Sperrgliedern ( 17) derart angeordnet sind, dass die einander gegenüberliegenden Angriffspunkte der Federschenkel (21 ) mit dem Mittelpunkt der Gurtwelle ( 10) auf einer Geraden liegen. 5. Self-locking belt retractor according to claim 4, characterized in that the engagement points of the spring legs (21) of the return spring (20) on the locking members (17) are arranged such that the opposing points of attack of the spring legs (21) with the center of the belt shaft (21). 10) lie on a straight line.
6. Selbstsperrender Gurtaufroller nach einem der Ansprüche 1 bis 5 , dadurch gekennzeichnet, dass an der Stirn der Gurtwelle ( 10) in symmetrischer Anordnung vier in zugeordnete Schlitze (25) der Steuerscheibe (22) eingreifende Haltestifte ( 15) angeordnet sind. 6. Self-locking belt retractor according to one of claims 1 to 5, characterized in that on the front of the belt shaft (10) in a symmetrical arrangement four in associated slots (25) of the control disc (22) engaging retaining pins (15) are arranged.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510030153 DE102005030153B4 (en) | 2005-06-29 | 2005-06-29 | Self-locking belt retractor with noise damping |
| DE102005030153.3 | 2005-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007000229A1 true WO2007000229A1 (en) | 2007-01-04 |
Family
ID=36764326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2006/005526 WO2007000229A1 (en) | 2005-06-29 | 2006-06-09 | Noise-reduced self-locking belt retractor |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102005030153B4 (en) |
| WO (1) | WO2007000229A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374734A (en) * | 2017-07-31 | 2017-11-24 | 成都中科博恩思医学机器人有限公司 | Transmission component, the operating theater instruments of operating robot and operating robot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3116705A1 (en) * | 1981-04-28 | 1982-11-11 | Autoflug Gmbh, 2084 Rellingen | SELF-LOCKING BELT REEL FOR SAFETY BELTS |
| EP1319562A2 (en) * | 2001-12-13 | 2003-06-18 | TRW Occupant Restraint Systems GmbH & Co. KG | Locking pawl |
| WO2003082640A1 (en) * | 2002-03-28 | 2003-10-09 | Autoliv Development Ab | High performance tightener |
| DE102004038390A1 (en) * | 2003-09-03 | 2005-03-31 | Trw Automotive Gmbh | Automotive seat belt wind-up mechanism has spring within belt wind-up mechanism eliminating mechanical play between two components |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955774A (en) * | 1974-11-25 | 1976-05-11 | Sigmatex, A.G. | Belt winder for safety belts |
| DE2722744A1 (en) * | 1977-05-20 | 1978-11-23 | Eckhard Dr Ing Hildebrandt | ROLLING DEVICE FOR SAFETY BELTS OF MOTOR VEHICLES |
| DE29917679U1 (en) * | 1999-10-07 | 2000-02-24 | Trw Repa Gmbh | Locking mechanism for a belt retractor |
-
2005
- 2005-06-29 DE DE200510030153 patent/DE102005030153B4/en active Active
-
2006
- 2006-06-09 WO PCT/EP2006/005526 patent/WO2007000229A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3116705A1 (en) * | 1981-04-28 | 1982-11-11 | Autoflug Gmbh, 2084 Rellingen | SELF-LOCKING BELT REEL FOR SAFETY BELTS |
| EP1319562A2 (en) * | 2001-12-13 | 2003-06-18 | TRW Occupant Restraint Systems GmbH & Co. KG | Locking pawl |
| WO2003082640A1 (en) * | 2002-03-28 | 2003-10-09 | Autoliv Development Ab | High performance tightener |
| DE102004038390A1 (en) * | 2003-09-03 | 2005-03-31 | Trw Automotive Gmbh | Automotive seat belt wind-up mechanism has spring within belt wind-up mechanism eliminating mechanical play between two components |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374734A (en) * | 2017-07-31 | 2017-11-24 | 成都中科博恩思医学机器人有限公司 | Transmission component, the operating theater instruments of operating robot and operating robot |
| CN107374734B (en) * | 2017-07-31 | 2023-06-09 | 成都博恩思医学机器人有限公司 | Transmission assembly, surgical instrument of surgical robot and surgical robot |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005030153A1 (en) | 2007-01-04 |
| DE102005030153B4 (en) | 2008-12-11 |
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